Severe Thunderstorm Warnings Active for Erie, PA & Chautauqua, NY — July 21 — SevereWX

Severe weather is active this evening across parts of the Upper Midwest under the broader Enhanced risk from the SPC's Day 1 outlook, which includes Slight risk probabilities near Nashville, TN. Storms are producing enough organization for tornado and severe thunderstorm watches in several states. Large hail, damaging winds, and tornadoes remain possible with the strongest cells.

Focus right now is on ongoing clusters in Iowa, Wisconsin, Illinois, and Michigan, where meteorologists are tracking rotating storms. Another round could develop in the next few hours if instability lingers.

Timeline

8:20 PM EDT — Severe potential in southwest Wisconsin, southeast Minnesota, northeast Iowa; watch unlikely

The Storm Prediction Center highlighted severe potential across southwest Wisconsin, far southeast Minnesota, and northeast Iowa. While storms could bring damaging winds and hail, the probability of issuing a watch sits at just 20 percent right now. Stay weather-aware in these areas as cells evolve.

9:04 PM EDT — Tornado Watch 501 for northeast Wisconsin into central U.P. Michigan

A tornado watch was issued for northeast Wisconsin into the central Upper Peninsula of Michigan. This tornado watch covers areas prone to supercellular development this evening. Expect possible tornadoes along with large hail and damaging winds through the valid period.

9:30 PM EDT — Severe Thunderstorm Watch 504 for west-central Illinois

The SPC called for a severe thunderstorm watch across west-central Illinois. Storms here threaten damaging wind gusts and isolated large hail. The watch addresses the immediate severe threat from intensifying cells.

10:07 PM EDT — Tornado Watch 500 for central Iowa

Tornado Watch 500 went into effect for central Iowa. This watch targets storms with rotation potential capable of producing tornadoes, hail, and strong winds. Local spots should prepare for heightened severe risks.

10:52 PM EDT — Update to Tornado Watch 501 for northeast Wisconsin

Forecasters issued an update to Tornado Watch 501 focusing on northeast Wisconsin. The threat of tornadoes persists with ongoing supercells in the watch area. Damaging winds and large hail are also on the table.

11:17 PM EDT — Severe Thunderstorm Watch 505 for northern lower Michigan

A severe thunderstorm watch was declared for northern lower Michigan. Expect gusty winds and hail from storms moving through the region this evening. Monitor for any escalation.

8:54 AM EDT — Severe Thunderstorm Warning issued for Erie, PA

A Severe Thunderstorm Warning is now in effect for Erie, Pennsylvania, until 9:30 AM EDT. Expect strong wind gusts capable of damage and large hail. Seek shelter indoors away from windows if storms approach.

9:08 AM EDT — Severe Thunderstorm Warning: Chautauqua, NY

A severe thunderstorm warning is in effect for Chautauqua, NY until 10:15 AM EDT. Damaging wind gusts and large hail are the main threats. Residents should seek shelter away from windows.

9:09 AM EDT — Severe Thunderstorm Warning: Erie, PA

The National Weather Service issued a severe thunderstorm warning for Erie, PA until 9:30 AM EDT. Strong storms could bring hail and high winds. Stay indoors if in the area.

9:43 AM EDT — Severe Thunderstorm Warning for Chautauqua, NY

A severe thunderstorm warning is in effect for Chautauqua County, New York, until 10:15 AM EDT. Strong winds capable of damage and large hail are possible. Seek shelter indoors away from windows if you're in the warned area.

9:58 AM EDT — Severe Thunderstorm Warning issued for Chautauqua, NY

A severe thunderstorm warning is now in effect for Chautauqua, NY until 11:00 AM EDT. Strong winds capable of damage and large hail are expected. Seek shelter indoors if you're in the warned area.

What's Next

Storms remain active across the region under an Enhanced risk level. Additional severe thunderstorms capable of damaging winds and hail are possible through the morning. Stay tuned to local National Weather Service updates for any changes.

[//]: # (fp:15cc84dd9db1)

[//]: # (seen:https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.6c3501efe094eea3db14fda323c9ac346c1f7a2f.001.1,https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d4fc9bf0f2d4df16573c0e30ee2ad73f7a514582.001.1,md1681,md1682,md1683,md1684,md1685,md1686)